TWI497880B - Motor and its motor bearing structure - Google Patents

Motor and its motor bearing structure Download PDF

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Publication number
TWI497880B
TWI497880B TW102129401A TW102129401A TWI497880B TW I497880 B TWI497880 B TW I497880B TW 102129401 A TW102129401 A TW 102129401A TW 102129401 A TW102129401 A TW 102129401A TW I497880 B TWI497880 B TW I497880B
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Taiwan
Prior art keywords
opening
tapered portion
motor
end surface
support
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TW102129401A
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Chinese (zh)
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TW201509075A (en
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Sunonwealth Electr Mach Ind Co
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Priority to TW102129401A priority Critical patent/TWI497880B/en
Priority to CN201320652866.1U priority patent/CN203594702U/en
Priority to CN201310498593.4A priority patent/CN104373467A/en
Publication of TW201509075A publication Critical patent/TW201509075A/en
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Publication of TWI497880B publication Critical patent/TWI497880B/en

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Description

馬達及其馬達軸承結構Motor and its motor bearing structure

本發明係關於一種馬達及其馬達軸承結構。The present invention relates to a motor and its motor bearing structure.

習知馬達為維持轉軸轉動時之穩定性，皆需使用軸承結構支撐轉軸。如我國公告專利第439883號所揭示之「具有雙軸承之散熱風扇」，其係使用一滾珠軸承及一含油軸承支撐葉輪之轉軸。然而，上述之軸承結構雖能提供足夠支撐面積以支撐轉軸，卻未在結構設計上考量其與轉軸之間的摩擦問題，以致上述軸承結構與轉軸之間常因摩擦面積太大而發生異常磨損及產生噪音，進而影響轉軸轉動時之穩定性。In order to maintain the stability of the rotating shaft, the conventional motor needs to support the rotating shaft by using a bearing structure. For example, the "cooling fan with dual bearings" disclosed in the Chinese Patent No. 439883 uses a ball bearing and an oil bearing to support the shaft of the impeller. However, although the bearing structure described above can provide a sufficient supporting area to support the rotating shaft, the frictional relationship between the bearing structure and the rotating shaft is not considered in the structural design, so that the bearing structure and the rotating shaft often have abnormal wear due to too large friction area. And generate noise, which in turn affects the stability of the shaft when it is rotated.

因此，有必要提供一創新且具進步性之馬達及其馬達軸承結構，以解決上述問題。Therefore, it is necessary to provide an innovative and progressive motor and its motor bearing structure to solve the above problems.

本發明提供一種馬達，包括：一底座，具有一軸管；一馬達軸承結構，設置於該底座之軸管內，該馬達軸承結構包括至少二軸承，該至少二軸承包括至少一含油軸承，該至少一含油軸承具有一軸孔及一軸向長度L，該軸孔包括至少一漸縮部及一支撐部，該支撐部連通該漸縮部，該支撐部具有一支撐長度X，該支撐長度X滿足關係式：L/15≦X≦2L/3；一轉軸，穿設於該至少一含油軸承之軸孔，該軸孔之支撐部係支撐該轉軸；及一定子，設置於該底座之軸管外側。The present invention provides a motor comprising: a base having a shaft tube; a motor bearing structure disposed in the shaft tube of the base, the motor bearing structure comprising at least two bearings, the at least two bearings comprising at least one oil bearing, the at least An oil-impregnated bearing has a shaft hole and an axial length L, the shaft hole includes at least one tapered portion and a supporting portion, the supporting portion communicates with the tapered portion, the supporting portion has a supporting length X, and the supporting length X satisfies Relational formula: L/15≦X≦2L/3; a rotating shaft is disposed through the shaft hole of the at least one oil bearing, the support portion of the shaft hole supports the rotating shaft; and the stator is disposed on the shaft tube of the base Outside.

本發明另提供一種馬達軸承結構，包括至少二軸承，該至少二 軸承包括至少一含油軸承，該至少一含油軸承具有一軸孔及一軸向長度L，該軸孔包括至少一漸縮部及一支撐部，該支撐部連通該漸縮部，該支撐部具有一支撐長度X，該支撐長度X滿足關係式：L/15≦X≦2L/3。The invention further provides a motor bearing structure comprising at least two bearings, the at least two The bearing includes at least one oil bearing, the at least one oil bearing has a shaft hole and an axial length L, the shaft hole includes at least one tapered portion and a supporting portion, the supporting portion communicates with the tapered portion, the supporting portion has a The support length X, which satisfies the relationship: L/15≦X≦2L/3.

本發明係可確保該至少一含油軸承之該支撐部所提供之支撐面積足以維持該轉軸的穩定性，並可同時減少該轉軸與該支撐部之摩擦面積及防止噪音產生。The present invention ensures that the support area provided by the support portion of the at least one oil-impregnated bearing is sufficient to maintain the stability of the rotating shaft, and at the same time reduce the friction area of the rotating shaft and the supporting portion and prevent noise generation.

為了能夠更清楚瞭解本發明的技術手段，而可依照說明書的內容予以實施，並且為了讓本發明所述目的、特徵和優點能夠更明顯易懂，以下特舉較佳實施例，並配合附圖，詳細說明如下。The embodiments of the present invention can be more clearly understood, and the objects, features, and advantages of the present invention will become more apparent. The details are as follows.

10‧‧‧馬達10‧‧‧ motor

11‧‧‧底座11‧‧‧Base

111‧‧‧軸管111‧‧‧ shaft tube

12‧‧‧馬達軸承結構12‧‧‧Motor bearing structure

12A‧‧‧軸承，含油軸承12A‧‧‧bearings, oil-impregnated bearings

12B‧‧‧軸承12B‧‧‧ bearing

120a‧‧‧第一端面120a‧‧‧ first end face

120b‧‧‧第二端面120b‧‧‧second end face

121‧‧‧軸孔121‧‧‧Axis hole

122‧‧‧漸縮部，第一漸縮部122‧‧‧The tapered part, the first tapered part

122a‧‧‧第一開口122a‧‧‧first opening

122b‧‧‧第二開口122b‧‧‧second opening

123‧‧‧第二漸縮部123‧‧‧Second gradual

123a‧‧‧第三開口123a‧‧‧ third opening

123b‧‧‧第四開口123b‧‧‧fourth opening

124‧‧‧支撐部124‧‧‧Support

13‧‧‧轉軸13‧‧‧ shaft

14‧‧‧定子14‧‧‧ Stator

15‧‧‧輪轂15‧‧·wheels

D1‧‧‧第一開口之直徑D1‧‧‧Diameter of the first opening

D2‧‧‧第二開口之直徑D2‧‧‧ diameter of the second opening

D3‧‧‧第三開口之直徑D3‧‧‧Diameter of the third opening

D4‧‧‧第四開口之直徑D4‧‧‧ diameter of the fourth opening

HD‧‧‧支撐部之孔徑HD‧‧‧Aperture of the support

L‧‧‧軸向長度L‧‧‧ axial length

X‧‧‧支撐長度X‧‧‧Support length

圖1顯示本發明馬達之結構剖視圖；圖2顯示本發明馬達軸承結構之含油軸承之結構立體圖；及圖3顯示本發明馬達軸承結構之含油軸承之結構剖視圖。BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the structure of a motor bearing of the motor bearing structure of the present invention; and Fig. 3 is a cross-sectional view showing the structure of an oil bearing of the motor bearing structure of the present invention.

參閱圖1，其係顯示本發明馬達之結構剖視圖。本發明之馬達10包括一底座11、一馬達軸承結構12、一轉軸13及一定子14。該底座11具有一軸管111。Referring to Figure 1, there is shown a cross-sectional view of the structure of the motor of the present invention. The motor 10 of the present invention includes a base 11, a motor bearing structure 12, a shaft 13 and a stator 14. The base 11 has a shaft tube 111.

圖2顯示本發明馬達軸承結構之含油軸承之結構立體圖。圖3顯示本發明馬達軸承結構之含油軸承之結構剖視圖。配合參閱圖1、圖2及圖3，該馬達軸承結構12設置於該底座11之軸管111內，該定子14則設置於該底座11之軸管111外側。該馬達軸承結構12包括至少二軸承12A、12B，該至少二軸承12A、12B包括至少一含油軸承12A，而另一軸承12B係可為滾珠軸承或含油軸承。Fig. 2 is a perspective view showing the structure of an oil bearing of the motor bearing structure of the present invention. Figure 3 is a cross-sectional view showing the structure of an oil bearing of the motor bearing structure of the present invention. Referring to FIG. 1 , FIG. 2 and FIG. 3 , the motor bearing structure 12 is disposed in the shaft tube 111 of the base 11 , and the stator 14 is disposed outside the shaft tube 111 of the base 11 . The motor bearing structure 12 includes at least two bearings 12A, 12B that include at least one oil bearing 12A, and the other bearing 12B can be a ball bearing or an oil bearing.

該至少一含油軸承12A具有一第一端面120a、一第二端面120b、一軸孔121及一軸向長度L。該軸孔121連通該第一端面120a及該第二 端面120b。該軸孔121包括至少一漸縮部122及一支撐部124，該支撐部124連通該漸縮部122。在本實施例中，該軸孔121包括一第一漸縮部122、一第二漸縮部123及該支撐部124。The at least one oil bearing 12A has a first end surface 120a, a second end surface 120b, a shaft hole 121 and an axial length L. The shaft hole 121 communicates with the first end surface 120a and the second End face 120b. The shaft hole 121 includes at least one tapered portion 122 and a supporting portion 124 that communicates with the tapered portion 122. In the embodiment, the shaft hole 121 includes a first tapered portion 122 , a second tapered portion 123 , and the supporting portion 124 .

該第一漸縮部122之孔徑係自該第一端面120a往該支撐部124的方向漸縮，且該第一漸縮部122具有一第一開口122a及一第二開口122b。該第一開口122a連通該第一端面120a，該第二開口122b連通該支撐部124，在本實施例中，該第一開口122a之直徑D1係大於該第二開口122b之直徑D2，且該第二開口122b之直徑D2等於該支撐部124之孔徑HD。The aperture of the first tapered portion 122 tapers from the first end surface 120a toward the support portion 124, and the first tapered portion 122 has a first opening 122a and a second opening 122b. The first opening 122a communicates with the first end surface 120a, and the second opening 122b communicates with the supporting portion 124. In this embodiment, the diameter D1 of the first opening 122a is larger than the diameter D2 of the second opening 122b, and the The diameter D2 of the second opening 122b is equal to the aperture HD of the support portion 124.

該第二漸縮部123相對於該第一漸縮部122，該第一漸縮部122及該第二漸縮部123係相對設置於該支撐部124之上下兩側。該第二漸縮部123之孔徑係自該第二端面120b往該支撐部124的方向漸縮，且該第二漸縮部123具有一第三開口123a及一第四開口123b。該第三開口123a連通該第二端面120b，該第四開口123b連通該支撐部124，在本實施例中，該第四開口123b之直徑D4等於該支撐部124之孔徑HD，而該第三開口123a之直徑D3等於該第一漸縮部122之第一開口122a之直徑D1。此外，該第二漸縮部123之長度係可不同於該第一漸縮部122之長度。The second tapered portion 123 is opposite to the first tapered portion 122 . The first tapered portion 122 and the second tapered portion 123 are oppositely disposed on the upper and lower sides of the supporting portion 124 . The aperture of the second tapered portion 123 tapers from the second end surface 120b toward the support portion 124, and the second tapered portion 123 has a third opening 123a and a fourth opening 123b. The third opening 123a communicates with the second end surface 120b. The fourth opening 123b communicates with the support portion 124. In this embodiment, the diameter D4 of the fourth opening 123b is equal to the aperture HD of the support portion 124, and the third The diameter D3 of the opening 123a is equal to the diameter D1 of the first opening 122a of the first tapered portion 122. In addition, the length of the second tapered portion 123 may be different from the length of the first tapered portion 122.

該支撐部124位於該第一漸縮部122與該第二漸縮部123之間，且該支撐部124具有單一孔徑HD及一支撐長度X。在本實施例中，該支撐長度X滿足關係式：L/15≦X≦2L/3，且較佳地，該軸向長度L係為1至6毫米。The support portion 124 is located between the first tapered portion 122 and the second tapered portion 123, and the support portion 124 has a single aperture HD and a support length X. In the present embodiment, the support length X satisfies the relationship: L/15≦X≦2L/3, and preferably, the axial length L is 1 to 6 mm.

該轉軸13穿設於該至少一含油軸承12A之軸孔121，且該軸孔121之支撐部124係支撐該轉軸13。在本實施例中，該轉軸13之一端係連接一輪轂15。或者，在另一實施例中，該轉軸13之一端係可連接一葉輪(圖未繪出)。The shaft 13 is disposed through the shaft hole 121 of the at least one oil bearing 12A, and the support portion 124 of the shaft hole 121 supports the shaft 13 . In the present embodiment, one end of the rotating shaft 13 is connected to a hub 15. Alternatively, in another embodiment, one end of the rotating shaft 13 can be connected to an impeller (not shown).

本發明係將該支撐部124之支撐長度X控制在L/15≦X≦2L/3的範圍，因此，可確保該支撐部124所提供之支撐面積足以維持該轉軸13的穩定性，並可同時減少該轉軸13與該支撐部124之摩擦面積及防止噪音產生，進而可避免摩擦問題影響轉軸轉動時之穩定性。The present invention controls the support length X of the support portion 124 to be in the range of L/15≦X≦2L/3, thereby ensuring that the support area provided by the support portion 124 is sufficient to maintain the stability of the rotary shaft 13, and At the same time, the friction area of the rotating shaft 13 and the supporting portion 124 is reduced and noise is prevented, thereby preventing the friction problem from affecting the stability when the rotating shaft rotates.

上述實施例僅為說明本發明之原理及其功效，並非限制本發明，因此習於此技術之人士對上述實施例進行修改及變化仍不脫本發明之精神。本發明之權利範圍應如後述之申請專利範圍所列。The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the scope of the present invention. The scope of the invention should be as set forth in the appended claims.

12A‧‧‧含油軸承12A‧‧‧oil bearing

120a‧‧‧第一端面120a‧‧‧ first end face

120b‧‧‧第二端面120b‧‧‧second end face

121‧‧‧軸孔121‧‧‧Axis hole

122‧‧‧第一漸縮部122‧‧‧First contraction

122a‧‧‧第一開口122a‧‧‧first opening

122b‧‧‧第二開口122b‧‧‧second opening

123‧‧‧第二漸縮部123‧‧‧Second gradual

123a‧‧‧第三開口123a‧‧‧ third opening

123b‧‧‧第四開口123b‧‧‧fourth opening

124‧‧‧支撐部124‧‧‧Support

D1‧‧‧第一開口之直徑D1‧‧‧Diameter of the first opening

D2‧‧‧第二開口之直徑D2‧‧‧ diameter of the second opening

D3‧‧‧第三開口之直徑D3‧‧‧Diameter of the third opening

D4‧‧‧第四開口之直徑D4‧‧‧ diameter of the fourth opening

HD‧‧‧支撐部之孔徑HD‧‧‧Aperture of the support

L‧‧‧軸向長度L‧‧‧ axial length

X‧‧‧支撐長度X‧‧‧Support length

Claims (16)

一種馬達，包括：一底座，具有一軸管；一馬達軸承結構，設置於該底座之軸管內，該馬達軸承結構包括至少二軸承，該至少二軸承包括至少一含油軸承，該至少一含油軸承具有一軸孔及一軸向長度L，該軸孔包括至少一漸縮部及一支撐部，該支撐部連通該漸縮部，該支撐部具有一支撐長度X，該支撐長度X滿足關係式：L/15≦X≦2L/3；一轉軸，穿設於該至少一含油軸承之軸孔，該軸孔之支撐部係支撐該轉軸；及一定子，設置於該底座之軸管外側。A motor includes: a base having a shaft tube; a motor bearing structure disposed in the shaft tube of the base, the motor bearing structure including at least two bearings, the at least two bearings including at least one oil bearing, the at least one oil bearing The utility model has a shaft hole and an axial length L. The shaft hole includes at least one tapered portion and a supporting portion. The supporting portion communicates with the tapered portion. The supporting portion has a supporting length X, and the supporting length X satisfies the relationship: L/15≦X≦2L/3; a rotating shaft is disposed through the shaft hole of the at least one oil bearing, the supporting portion of the shaft hole supports the rotating shaft; and the stator is disposed outside the shaft tube of the base. 如請求項1之馬達，其中該軸孔包括一第一漸縮部及一第二漸縮部，該第二漸縮部相對於該第一漸縮部，該支撐部位於該第一漸縮部與該第二漸縮部之間。The motor of claim 1, wherein the shaft hole comprises a first tapered portion and a second tapered portion, the second tapered portion is located relative to the first tapered portion, the supporting portion is located at the first tapered portion Between the portion and the second tapered portion. 如請求項2之馬達，其中該至少一含油軸承另具有一第一端面及一第二端面，該軸孔連通該第一端面及該第二端面，該第一漸縮部之孔徑係自該第一端面往該支撐部的方向漸縮，而該第二漸縮部之孔徑係自該第二端面往該支撐部的方向漸縮。The motor of claim 2, wherein the at least one oil bearing further has a first end surface and a second end surface, the shaft hole communicating with the first end surface and the second end surface, the aperture of the first tapered portion is from the The first end surface is tapered toward the support portion, and the aperture of the second tapered portion is tapered from the second end surface toward the support portion. 如請求項3之馬達，其中該第一漸縮部具有一第一開口及一第二開口，該第一開口連通該第一端面，該第二開口連通該支撐部，該第二開口之直徑等於該支撐部之孔徑。The motor of claim 3, wherein the first tapered portion has a first opening and a second opening, the first opening communicates with the first end surface, the second opening communicates with the supporting portion, and the diameter of the second opening It is equal to the aperture of the support. 如請求項4之馬達， 其中該第二漸縮部具有一第三開口及一第四開口，該第三開口連通該第二端面，該第四開口連通該支撐部，該第四開口之直徑等於該支撐部之孔徑。The motor of claim 4, The second tapered portion has a third opening and a fourth opening. The third opening communicates with the second end surface. The fourth opening communicates with the supporting portion. The diameter of the fourth opening is equal to the diameter of the supporting portion. 如請求項5之馬達，其中該第二漸縮部之第三開口之直徑等於該第一漸縮部之第一開口之直徑。The motor of claim 5, wherein the diameter of the third opening of the second tapered portion is equal to the diameter of the first opening of the first tapered portion. 如請求項1之馬達，其中該支撐部具有單一孔徑。The motor of claim 1, wherein the support has a single aperture. 如請求項1之馬達，其中該至少一含油軸承之軸向長度L係為1至6毫米。The motor of claim 1, wherein the at least one oil bearing has an axial length L of 1 to 6 mm. 一種馬達軸承結構，包括至少二軸承，該至少二軸承包括至少一含油軸承，該至少一含油軸承具有一軸孔及一軸向長度L，該軸孔包括至少一漸縮部及一支撐部，該支撐部連通該漸縮部，該支撐部具有一支撐長度X，該支撐長度X滿足關係式：L/15≦X≦2L/3。A motor bearing structure comprising at least two bearings, the at least two bearings comprising at least one oil bearing, the at least one oil bearing has a shaft hole and an axial length L, the shaft hole comprising at least one tapered portion and a supporting portion, The support portion communicates with the tapered portion, and the support portion has a support length X that satisfies the relationship: L/15≦X≦2L/3. 如請求項9之馬達軸承結構，其中該軸孔包括一第一漸縮部及一第二漸縮部，該第二漸縮部相對於該第一漸縮部，該支撐部位於該第一漸縮部與該第二漸縮部之間。The motor bearing structure of claim 9, wherein the shaft hole comprises a first tapered portion and a second tapered portion, the second tapered portion is opposite to the first tapered portion, the supporting portion is located at the first portion Between the tapered portion and the second tapered portion. 如請求項10之馬達軸承結構，其中該至少一含油軸承另具有一第一端面及一第二端面，該軸孔連通該第一端面及該第二端面，該第一漸縮部之孔徑係自該第一端面往該支撐部的方向漸縮，而該第二漸縮部之孔徑係自該第二端面往該支撐部的方向漸縮。The motor bearing structure of claim 10, wherein the at least one oil bearing further has a first end surface and a second end surface, the shaft hole communicating with the first end surface and the second end surface, and the aperture of the first tapered portion The first end surface is tapered toward the support portion, and the aperture of the second tapered portion is tapered from the second end surface toward the support portion. 如請求項11之馬達軸承結構，其中該第一漸縮部具有一第一開口及一第二開口，該第一開 口連通該第一端面，該第二開口連通該支撐部，該第二開口之直徑等於該支撐部之孔徑。The motor bearing structure of claim 11, wherein the first tapered portion has a first opening and a second opening, the first opening The port communicates with the first end surface, and the second opening communicates with the support portion, and the diameter of the second opening is equal to the aperture of the support portion. 如請求項12之馬達軸承結構，其中該第二漸縮部具有一第三開口及一第四開口，該第三開口連通該第二端面，該第四開口連通該支撐部，該第四開口之直徑等於該支撐部之孔徑。The motor bearing structure of claim 12, wherein the second tapered portion has a third opening and a fourth opening, the third opening communicates with the second end surface, the fourth opening communicates with the supporting portion, the fourth opening The diameter is equal to the aperture of the support. 如請求項13之馬達軸承結構，其中該第二漸縮部之第三開口之直徑等於該第一漸縮部之第一開口之直徑。The motor bearing structure of claim 13, wherein the diameter of the third opening of the second tapered portion is equal to the diameter of the first opening of the first tapered portion. 如請求項9之馬達軸承結構，其中該支撐部具有單一孔徑。The motor bearing structure of claim 9, wherein the support has a single aperture. 如請求項9之馬達軸承結構，其中該至少一含油軸承之軸向長度L係為1至6毫米。The motor bearing structure of claim 9, wherein the at least one oil bearing has an axial length L of 1 to 6 mm.
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TWI343690B (en) * 2007-08-03 2011-06-11 Foxconn Tech Co Ltd Bearing structure of motor
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